Cleaning Off Mold on Textured Ceiling

My textured (swirled) ceiling is overrun with black mold. The bathroom has got 2 bathroom fans already (on top of bath and shower), but there is still a problem. When I used mold spray, then wiped it, the plaster also came off thus no more swirled ceiling. No matter how much I sprayed and left it on, the black spores still grow and won't come off without ruining the texture. Opening the window during a shower doesn't help. Any advice on textured ceiling mold budget removal? Urgently needed. Thanks.